Ubuntu 17.04更新後無法正常啟動。我嘗試了幾個運行等級。
我無法進入運行等級 5 和 3 作為圖形模式。 lightdm 永遠不會啟動！
dmesg啟動後出現錯誤：
[ 0.144583] ACPI Error: [_PPC] Namespace lookup failure, AE_ALREADY_EXISTS (20160930/dswload-378)
[ 0.160586] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[ 12.455982] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro
[ 13.807652] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-26.ucode failed with error -2
[ 13.813076] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-25.ucode failed with error -2
[ 13.813094] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-24.ucode failed with error -2
[ 13.832814] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-23.ucode failed with error -2
結果錯誤journalctl -xb：
مه 20 09:42:32 hamid-Lenovo-ideapad-110-15ISK kernel: ACPI Error: [_PPC] Namespace lookup failure, AE_ALREADY_EXISTS (20160930/dswload-378)
مه 20 09:42:32 hamid-Lenovo-ideapad-110-15ISK kernel: acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
مه 20 09:42:35 hamid-Lenovo-ideapad-110-15ISK kernel: iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-26.ucode failed with error -2
مه 20 09:42:35 hamid-Lenovo-ideapad-110-15ISK kernel: iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-25.ucode failed with error -2
مه 20 09:42:35 hamid-Lenovo-ideapad-110-15ISK kernel: iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-24.ucode failed with error -2
مه 20 09:42:35 hamid-Lenovo-ideapad-110-15ISK kernel: iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-23.ucode failed with error -2
مه 20 09:42:41 hamid-Lenovo-ideapad-110-15ISK systemd-fsck[691]: home contains a file system with errors, check forced.
مه 20 09:42:43 hamid-Lenovo-ideapad-110-15ISK systemd-fsck[691]: fsck failed with error code 4.
我要問的是，如何退出緊急模式並修復作業系統的可用性？